#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <vector>
#include <unordered_set>
#include <math.h>
using namespace std;
    int myAtoi(string str) {
        int a = 1;
        long long n = 0;
        bool p = false;
        for (int i = 0; i < str.size(); i++)
        {
            if (str[i] == '-')
                a = -1;
            if (str[i] >= '0' && str[i] <= '9')
            {

                n = n * 10 + (str[i] - '0');
                p = true;
            }
            else {
                if (p)
                    break;
                else if (str[i] != ' ' && str[i] != '-' && str[i] != '+')
                    break;
            }
        }
        n *= a;
        if (n > (pow(2, 31) - 1))
            n = pow(2, 31) - 1;
        else if (n < -(pow(2, 31)))
            n = -pow(2, 31);
        return n;
    }
int main()
{
    //cout << myAtoi("4878-45");
    cout << string("abcdef");
}